AERCO XPC GATEWAY Communications - Manual (Page 13)

GF-122 AERCO XPC GATEWAY
13
1.5 GATEWAY PORTS & JUMPERS
The Gateway Input/Output (I/O) signal ports are located on the left side of the XPC Gateway, behind
the enclosure cover as illustrated in Figure 1-3. In addition, jumpers are also provided on the left side
of the Gateway to select the physical type of network being utilized on port 2. The following
subsections provide brief descriptions of the ports and jumpers provided.
1.5.1 Port 1a
Port 1a (Figure 1-3, Detail “A”) can only be configured for RS485 communication or special ARC156.
This port is normally used for BAS connections. However, if the BAS is communicating via BACnet
PTP or is connected to a LonWorks SLTA module, Port 1a cannot be used. Refer to the AERCO XPC
Gateway Integration Guide included as Part II of this manual.
1.5.2 Port 2
Port 2 (Figure 1-3, Detail “B”) can be configured for RS485 or RS232 communication. This port
normally connects to AERCO equipment except when the BAS is utilizing BACnet PTP or a
LonWorks SLTA. In this case, Port 1a must be used for the AERCO equipment. The jumpers located
below Port 2 are used to select RS485 or RS232 (EIA-485 or EIA-232) communication and either a 2-
wire or 4-wire communication interface (see para. 1.5.5).
1.5.3 Local Access Port
The Local Access Port (Figure 1-3, Detail “C2”) is used to program or read Gateway setup
information or to monitor network traffic from the Gateway with a PC using a special interface module.
Special network display monitors can also be connected to this port to display network information.
1.5.4 Optional Plug-In Module (Port 1b)
A 14-pin connector labeled Port 1b is for an optional plug-in module. Currently, there is a LonWorks
transceiver module that allows LonWorks FTT10A communication without the use of a Serial Lon
Talk Adapter (SLTA).
1.5.5 Jumper Settings
Two jumpers are located side-by-side below PORT 2 on the Gateway (Figure 1-3, Detail “D”). These
jumpers provide the following functions:
• EIA-232/EIA-485 Jumper - This jumper is connected across 8 of the 12 pins of the header
connector to select either an EIA-485 (RS485) or EIA-232 (RS232) connection to the
BAS. Setting the jumper to the lower position selects EIA-485 (RS485) which is the
default position. Setting the jumper to the upper position selects EIA-232 (RS232).
• 2-Wire/4-Wire Jumper – This jumper is connected across 2 of the 3 pins of the header
connector. Setting the jumper to the upper position selects 2-wire communication. Setting
the jumper to the lower position selects 4-wire communication.